summaryrefslogtreecommitdiffstats
path: root/sys/alpha/tc/if_le_ioasic.c
diff options
context:
space:
mode:
Diffstat (limited to 'sys/alpha/tc/if_le_ioasic.c')
-rw-r--r--sys/alpha/tc/if_le_ioasic.c400
1 files changed, 0 insertions, 400 deletions
diff --git a/sys/alpha/tc/if_le_ioasic.c b/sys/alpha/tc/if_le_ioasic.c
deleted file mode 100644
index 0e7ed07..0000000
--- a/sys/alpha/tc/if_le_ioasic.c
+++ /dev/null
@@ -1,400 +0,0 @@
-/* $FreeBSD$ */
-/* $NetBSD: if_le_ioasic.c,v 1.10 1998/01/19 02:49:48 thorpej Exp $ */
-
-/*
- * Copyright (c) 1996 Carnegie-Mellon University.
- * All rights reserved.
- *
- * Author: Chris G. Demetriou
- *
- * Permission to use, copy, modify and distribute this software and
- * its documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
- * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie the
- * rights to redistribute these changes.
- */
-
-/*
- * LANCE on DEC IOCTL ASIC.
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/module.h>
-#include <sys/bus.h>
-#include <sys/mbuf.h>
-#include <sys/syslog.h>
-#include <sys/socket.h>
-
-#include <net/if.h>
-#include <net/netisr.h>
-
-#include <netinet/in.h>
-#include <netinet/in_systm.h>
-#include <netinet/in_var.h>
-#include <netinet/ip.h>
-#include <netinet/if_ether.h>
-#include <net/if_media.h>
-
-#ifdef INET
-#include <netinet/in.h>
-#include <netinet/if_inarp.h>
-#endif
-
-#include <alpha/tc/am7990reg.h>
-#include <alpha/tc/am7990var.h>
-
-#include <alpha/tc/if_levar.h>
-#include <alpha/tc/tcreg.h>
-#include <alpha/tc/tcvar.h>
-#include <alpha/tc/ioasicvar.h>
-
-extern caddr_t le_iomem;
-
-static int le_ioasic_probe(device_t dev);
-static int le_ioasic_attach(device_t dev);
-static device_method_t le_ioasic_methods[] = {
- /* Device interface */
- DEVMETHOD(device_probe, le_ioasic_probe),
- DEVMETHOD(device_attach, le_ioasic_attach),
- {0, 0}
-};
-#define LE_IOASIC_SOFTC(dev) (struct le_softc*) device_get_softc(dev)
-static driver_t le_ioasic_driver = {
- "le",
- le_ioasic_methods,
- sizeof(struct le_softc),
-};
-
-static devclass_t le_ioasic_devclass;
-
-hide void le_ioasic_copytobuf_gap2(struct am7990_softc *, void *,
- int, int);
-hide void le_ioasic_copyfrombuf_gap2(struct am7990_softc *, void *,
- int, int);
-
-hide void le_ioasic_copytobuf_gap16(struct am7990_softc *, void *,
- int, int);
-hide void le_ioasic_copyfrombuf_gap16(struct am7990_softc *, void *,
- int, int);
-hide void le_ioasic_zerobuf_gap16(struct am7990_softc *, int, int);
-
-
-static int
-le_ioasic_probe(device_t dev)
-{
- if(strcmp(device_get_name(device_get_parent(dev)),"ioasic")){
- return ENXIO;
- } else {
- return(0);
- }
-
-}
-
-static int
-le_ioasic_attach(device_t dev)
-{
- register struct le_softc *lesc = LE_IOASIC_SOFTC(dev);
- register struct am7990_softc *sc = &lesc->sc_am7990;
- struct ioasic_dev *d = device_get_ivars(dev);
- lesc->sc_r1 = (struct lereg1 *)
- TC_DENSE_TO_SPARSE(TC_PHYS_TO_UNCACHED(d->iada_addr));
- sc->sc_mem = (void *)TC_PHYS_TO_UNCACHED(le_iomem);
- sc->sc_copytodesc = le_ioasic_copytobuf_gap2;
- sc->sc_copyfromdesc = le_ioasic_copyfrombuf_gap2;
- sc->sc_copytobuf = le_ioasic_copytobuf_gap16;
- sc->sc_copyfrombuf = le_ioasic_copyfrombuf_gap16;
- sc->sc_zerobuf = le_ioasic_zerobuf_gap16;
-
- if (le_iomem == 0) {
- printf("%s: DMA area not set up\n",
- device_get_nameunit(sc->sc_dev));
- return ENXIO;
- }
-
- sc->sc_dev = dev;
- sc->unit = device_get_unit(dev);
-
- dec_le_common_attach(sc, ioasic_lance_ether_address());
-
- ioasic_intr_establish(device_get_parent(dev), d->iad_cookie, 0, am7990_intr, sc);
- return(0);
-}
-
-/*
- * Special memory access functions needed by ioasic-attached LANCE
- * chips.
- */
-
-/*
- * gap2: two bytes of data followed by two bytes of pad.
- *
- * Buffers must be 4-byte aligned. The code doesn't worry about
- * doing an extra byte.
- */
-
-void
-le_ioasic_copytobuf_gap2(sc, fromv, boff, len)
- struct am7990_softc *sc;
- void *fromv;
- int boff;
- register int len;
-{
- volatile caddr_t buf = sc->sc_mem;
- register caddr_t from = fromv;
- register volatile u_int16_t *bptr;
-
- if (boff & 0x1) {
- /* handle unaligned first byte */
- bptr = ((volatile u_int16_t *)buf) + (boff - 1);
- *bptr = (*from++ << 8) | (*bptr & 0xff);
- bptr += 2;
- len--;
- } else
- bptr = ((volatile u_int16_t *)buf) + boff;
- while (len > 1) {
- *bptr = (from[1] << 8) | (from[0] & 0xff);
- bptr += 2;
- from += 2;
- len -= 2;
- }
- if (len == 1)
- *bptr = (u_int16_t)*from;
-}
-
-void
-le_ioasic_copyfrombuf_gap2(sc, tov, boff, len)
- struct am7990_softc *sc;
- void *tov;
- int boff, len;
-{
- volatile caddr_t buf = sc->sc_mem;
- register caddr_t to = tov;
- register volatile u_int16_t *bptr;
- register u_int16_t tmp;
-
- if (boff & 0x1) {
- /* handle unaligned first byte */
- bptr = ((volatile u_int16_t *)buf) + (boff - 1);
- *to++ = (*bptr >> 8) & 0xff;
- bptr += 2;
- len--;
- } else
- bptr = ((volatile u_int16_t *)buf) + boff;
- while (len > 1) {
- tmp = *bptr;
- *to++ = tmp & 0xff;
- *to++ = (tmp >> 8) & 0xff;
- bptr += 2;
- len -= 2;
- }
- if (len == 1)
- *to = *bptr & 0xff;
-}
-
-/*
- * gap16: 16 bytes of data followed by 16 bytes of pad.
- *
- * Buffers must be 32-byte aligned.
- */
-
-void
-le_ioasic_copytobuf_gap16(sc, fromv, boff, len)
- struct am7990_softc *sc;
- void *fromv;
- int boff;
- register int len;
-{
- volatile caddr_t buf = sc->sc_mem;
- register caddr_t from = fromv;
- register caddr_t bptr;
-
- bptr = buf + ((boff << 1) & ~0x1f);
- boff &= 0xf;
-
- /*
- * Dispose of boff so destination of subsequent copies is
- * 16-byte aligned.
- */
- if (boff) {
- register int xfer;
- xfer = min(len, 16 - boff);
- bcopy(from, bptr + boff, xfer);
- from += xfer;
- bptr += 32;
- len -= xfer;
- }
-
- /* Destination of copies is now 16-byte aligned. */
- if (len >= 16)
- switch ((u_long)from & (sizeof(u_int32_t) -1)) {
- case 2:
- /* Ethernet headers make this the dominant case. */
- do {
- register u_int32_t *dst = (u_int32_t*)bptr;
- register u_int16_t t0;
- register u_int32_t t1, t2, t3, t4;
-
- /* read from odd-16-bit-aligned, cached src */
- t0 = *(u_int16_t*)from;
- t1 = *(u_int32_t*)(from+2);
- t2 = *(u_int32_t*)(from+6);
- t3 = *(u_int32_t*)(from+10);
- t4 = *(u_int16_t*)(from+14);
-
- /* DMA buffer is uncached on mips */
- dst[0] = t0 | (t1 << 16);
- dst[1] = (t1 >> 16) | (t2 << 16);
- dst[2] = (t2 >> 16) | (t3 << 16);
- dst[3] = (t3 >> 16) | (t4 << 16);
-
- from += 16;
- bptr += 32;
- len -= 16;
- } while (len >= 16);
- break;
-
- case 0:
- do {
- register u_int32_t *src = (u_int32_t*)from;
- register u_int32_t *dst = (u_int32_t*)bptr;
- register u_int32_t t0, t1, t2, t3;
-
- t0 = src[0]; t1 = src[1]; t2 = src[2]; t3 = src[3];
- dst[0] = t0; dst[1] = t1; dst[2] = t2; dst[3] = t3;
-
- from += 16;
- bptr += 32;
- len -= 16;
- } while (len >= 16);
- break;
-
- default:
- /* Does odd-aligned case ever happen? */
- do {
- bcopy(from, bptr, 16);
- from += 16;
- bptr += 32;
- len -= 16;
- } while (len >= 16);
- break;
- }
- if (len)
- bcopy(from, bptr, len);
-}
-
-void
-le_ioasic_copyfrombuf_gap16(sc, tov, boff, len)
- struct am7990_softc *sc;
- void *tov;
- int boff, len;
-{
- volatile caddr_t buf = sc->sc_mem;
- register caddr_t to = tov;
- register caddr_t bptr;
-
- bptr = buf + ((boff << 1) & ~0x1f);
- boff &= 0xf;
-
- /* Dispose of boff. source of copy is subsequently 16-byte aligned. */
- if (boff) {
- register int xfer;
- xfer = min(len, 16 - boff);
- bcopy(bptr+boff, to, xfer);
- to += xfer;
- bptr += 32;
- len -= xfer;
- }
- if (len >= 16)
- switch ((u_long)to & (sizeof(u_int32_t) -1)) {
- case 2:
- /*
- * to is aligned to an odd 16-bit boundary. Ethernet headers
- * make this the dominant case (98% or more).
- */
- do {
- register u_int32_t *src = (u_int32_t*)bptr;
- register u_int32_t t0, t1, t2, t3;
-
- /* read from uncached aligned DMA buf */
- t0 = src[0]; t1 = src[1]; t2 = src[2]; t3 = src[3];
-
- /* write to odd-16-bit-word aligned dst */
- *(u_int16_t *) (to+0) = (u_short) t0;
- *(u_int32_t *) (to+2) = (t0 >> 16) | (t1 << 16);
- *(u_int32_t *) (to+6) = (t1 >> 16) | (t2 << 16);
- *(u_int32_t *) (to+10) = (t2 >> 16) | (t3 << 16);
- *(u_int16_t *) (to+14) = (t3 >> 16);
- bptr += 32;
- to += 16;
- len -= 16;
- } while (len > 16);
- break;
- case 0:
- /* 32-bit aligned aligned copy. Rare. */
- do {
- register u_int32_t *src = (u_int32_t*)bptr;
- register u_int32_t *dst = (u_int32_t*)to;
- register u_int32_t t0, t1, t2, t3;
-
- t0 = src[0]; t1 = src[1]; t2 = src[2]; t3 = src[3];
- dst[0] = t0; dst[1] = t1; dst[2] = t2; dst[3] = t3;
- to += 16;
- bptr += 32;
- len -= 16;
- } while (len > 16);
- break;
-
- /* XXX Does odd-byte-aligned case ever happen? */
- default:
- do {
- bcopy(bptr, to, 16);
- to += 16;
- bptr += 32;
- len -= 16;
- } while (len > 16);
- break;
- }
- if (len)
- bcopy(bptr, to, len);
-}
-
-void
-le_ioasic_zerobuf_gap16(sc, boff, len)
- struct am7990_softc *sc;
- int boff, len;
-{
- volatile caddr_t buf = sc->sc_mem;
- register caddr_t bptr;
- register int xfer;
-
- bptr = buf + ((boff << 1) & ~0x1f);
- boff &= 0xf;
- xfer = min(len, 16 - boff);
- while (len > 0) {
- bzero(bptr + boff, xfer);
- bptr += 32;
- boff = 0;
- len -= xfer;
- xfer = min(len, 16);
- }
-}
-
-
-
-DRIVER_MODULE(le_ioasic, ioasic, le_ioasic_driver, le_ioasic_devclass, 0, 0);
OpenPOWER on IntegriCloud